19652240

素因数分解:

$2^4\times 5^1\times {\mathrm{245653}}^1$

素因数の和:245666

約数の個数: 20

約数和(自身を含む): 45691644

約数和(自身を除く): 26039404

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 245653, 491306, 982612, 1228265, 1965224, 2456530, 3930448, 4913060, 9826120, 19652240]

約数ペア:

[(1, 19652240), (2, 9826120), (4, 4913060), (5, 3930448), (8, 2456530), (10, 1965224), (16, 1228265), (20, 982612), (40, 491306), (80, 245653)]